Longevity
What is Cystatin C? Optimal Ranges & Function
Normal Range:0.5-1 mg/L
Optimal Range:0.6-0.85 mg/L
What is Cystatin C?
Cystatin C is a small protein filtered by the kidneys. Unlike creatinine, it's not affected by muscle mass, age, or diet, making it a more accurate marker of kidney function and biological aging.
Why Cystatin C Matters
Emerging research shows Cystatin C is one of the strongest predictors of all-cause mortality and biological age. It reflects both kidney health and systemic aging processes, making it invaluable for longevity assessment.
Symptoms of Low Cystatin C
- Rarely problematic
- Could indicate hyperthyroidism
Symptoms of High Cystatin C
- Kidney dysfunction
- Increased cardiovascular risk
- Accelerated biological aging
- Higher all-cause mortality risk
Reference Ranges
0.5 mg/L1 mg/L
0.6
0.85
Standard Lab Range
BioStack Optimal
| Range Type | Minimum | Maximum | Unit |
|---|---|---|---|
| Normal Range | 0.5 | 1 | mg/L |
| Optimal Range | 0.6 | 0.85 | mg/L |
Related Biomarkers
Analyze Your Cystatin C Levels
Related Topics:
cystatin c
kidney function
biological age
mortality predictor
longevity
renal health